Sorry if there's already topics about these somewhere, or if they're dumb n00b questions. I haven't seen any such topics yet, though, so hopefully I'm safe.
What's the best way to go about de-yellowing large items like playsets? My Dream Castle and other sets are horribly yellowed and I'd like to brighten them up, if I can. I know that small pieces can be soaked in hydrogen peroxide, but that's obviously not feasible with something the size of a playset. I've heard that smearing whitening toothpaste with peroxide on yellowed plastic will restore it too - has anyone had any luck with this? How long does it take to work?
My second question is about labels for the playsets - are reproductions sold anywhere online? There are places like Reprolabels that sell sticker sheets for Transformers and other vintage toys, but I haven't seen any MLP labels at these places.
If you have any advice on either of these subjects, I'd love to hear it! Thanks in advance.